/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controlador.visao.curso;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

/**
 *
 * @author euzinha
 */
@WebServlet(name = "GravarCursos", urlPatterns = {"/GravarCursos"})
public class GravarCursos extends HttpServlet {

    @Resource(name = "bancoNotas")
    private DataSource bancoNotas;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Connection con = null;
        Statement stmt = null;
        PrintWriter out = null;
        try {
            response.setContentType("text/html;charset=UTF-8");
            out = response.getWriter();
            //Enumeration<String> parametros = request.getParameterNames();
            String id = request.getParameter("id");
            String nome = request.getParameter("nome");
            String cidade = request.getParameter("cidade");
            con = bancoNotas.getConnection();
            stmt = con.createStatement();
            if (id == null) {
                stmt.executeUpdate("insert into cursos (nome,cidade) values ('" + nome
                        + "','" + cidade + "')");
            } else {
                stmt.executeUpdate("update cursos set nome='" + nome
                        + "',cidade='" + cidade + "' where id=" + id);
            }
            request.getRequestDispatcher("ListarCursos").forward(request, response);
        } catch (SQLException ex) {
            try {
                out.println("<html>");
                out.println("<head>");
                out.println("<title>Erro</title>");
                out.println("</head>");
                out.println("<body>");
                out.println("<h1>Erro de SQL</h1>");
                out.println(ex.getMessage());
                out.println("</body>");
                out.println("</html>");
            } finally {
                out.close();
            }
        } finally {
            try {
                stmt.close();
                con.close();
            } catch (SQLException ex) {
                Logger.getLogger(GravarCursos.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
